Dump body



Julie 18, 1946.

F. BISZANTZ DUMP BODY Filed May 6, 1944 2 Sheets-Sheet 1 N.

INVENTOR- FRED BISZANTZ ATTORNEYS June 18, 1946.

F. BISZANTZ mm? BODY Filed May 6, 1944.

2 Sheets-Sheet 2 INVENTOR FRED BISZANTZ JOAM ATTORNEIY5 Patented June 18, 1946 DUMP BODY Fred Biszantz, Gallon, Ohio, assignor to The Gallon Metallic Vault Company, Galion, Ohio, a corporation of Ohio p ation May 6, 1944, Serial No. 534,457

This invention relates to dump carg bodies for trucks, and particularly to a combination dump cargo body that is adapted for use upon'long wheelbase trucks.

When using dump bodies on long wheelbase trucks, one of the greatest dangers in their useis that the'dump body, being of the sam length as-the long wheelbase truck, can be overloaded with heavy materials such as sand and gravel, thereby= straining the frame of the truck and overloading the hoist when attempting to dump the load. In prior arrangements, the long dump body has been provided with a partition which separated the-body into two sections. It was intended that only therear section of the dump body should be loaded with heav materials, such as sand and gravel. However, the actual use of the trucks inthis manner could not be controlled because the workmen would regularly load the entire truck body with the heavy materials, thus overloading the same, 4

Also, the prior long dump bodies, used on long wheelbase trucks, have required a. relatively large.

7 Claims. (01. case-.17)

overhead clearance to-permit the truckbody to bev dumped. "Also, the long dump body throws the center of gravity of the truck when the body of the truck is in dumping position too high for good stability of the truck.

One object of the invention is to provide a dump cargo body for long wheelbase trucks in which overloading the, truck is avoided.

Another object of the invention is a dump cargo body for long wheelbase trucks which, during dumpinghas its center of gravity in a relatively low position andwhich consequently is suificiently stable so that top swaying, tipping, etc., do not occur.

Another object of the invention is a dump cargo body for long wheelbase trucks which, when loaded, can, at the same time, carry other merchandise not to be dumped and. from which this other merchandise does not haveto be removed during dumping.

Another objectv of the invention is a dump cargo body for long wheelbase truck which also can. be used for carrying lumber positioned over its entire length.

Another object of the invention is a dump cargo body for long wheelbase trucks in which, when filled and in horizontal position, the center of gravity is located close to or above the axis of the rear wheels.

Another object of the invention is to provide a combination dump cargo body wherein the bod consists of two parts, one of which is a. movable dump body part adapted to receive heavy loads such as sand and gravel, and the other part ofthe body is; a stationary stake type body, whereby the truck fralnecanhot be overloaded with heavy ma;- terialsuchas sand and gravel because'they will not be retained satisfactorily in the stake type part of the combination dump cargo body.

Still another object of the invention is to provide a combination dump cargo body, spans: which consists of a dump body and another part of which consistsof a stake typebody, wherein a partition is provided between the two parts of the body that can be lowered to permit the use of the entire floor of both parts of the body 51mm taneously for carrying long articles, such as lumber, and the dump portion of the bodycan be operated in nominal manner to quickly unload the lumber from the body if desired.

sun another object of the invention is a u i n carbo body for long wheelbas trucks which. for dumping, requires a relatively low overhead clear,

ance so that it can be used for work under brid e in tunnels, or other inside structure.

Still another object of the invention is a dump cargo body for long wheelbase trucks in the front part of which seats can be provided which seats can be occupied during dumping. Still another objectof the invention is a dump cargo body for long wheelbase trucks which is 80 transferable to short Wheelbase chassis.

The objects of the present invention are accom plished by making the front part of the dump cargo body for long wheelbase trucks stationary and separable from the tiltable rear part.

The invention will be more fully understood Figure 4 is a sectional view taken alon the longitudinal axis of the truck body.

Figure 5 is a diagrammaticsectional, view of the truck showing it in loaded condition.

Figure 6 is a diagrammatic sectional view showing the truck body of Figure 5 during dumping. Figure 7 is a diagrammatic sectional view showing the truck when being used for lumber.

The dump cargo body ofthis invention, as

illustrated in the drawings, consists of one seetion or part III that constitutes the dump body portion of the dump cargo body, and a stationary section or part II that constitutes the stake type portion f the body that is adapted to receive general cargo. The truck body, consist of the parts l0 and I and is carried by the truck frame |2 consisting of the usual metal channel irons.

The dump cargo body consists of longitudinally extending channel members l3 that support transverse channel members 59, which in turn support the dump body A sill I4 is disposed between the channel member I3 and the frame I2 whereby to support the dump body 5| upon the chassis frame I2. The front part of the sill |4 may consist of a Wood sill section 5. The longitudinal channels |3 for the dump body 5| are secured to the transverse channels 59 by means of the bracket members II.

The dump body 5| is provided with a bracket 52 provided on each longitudinal channel I3 that has a pivot pin |8 extending therethrough into engagement with the sill frame I 4 and about which the dump body part II) pivots during a dumping operation. The dump body 5| is provided with the usual rear door 20 that :ishinged upon suitable hinge pins 2| and is provided with a locking or latching mechanism 22 to retain the rear door 20 in locked position to close the end of the dump body.

The side walls of the dump body 5| are provided with metal sockets 25 that are attached to receive stakes 24 to increase the heighth of the dump body 5|, when cargo other than sand and ravel is to be carried in the dump body 5| The stakes 24 may also be provided with sockets 26 that receive bar members 21 to support a tarpaulin if it is desired to cover the body 5|.

The stationary stake type part II of the truck body is stationarily mounted upon the chassis frame I2. This front part II consists of a floor section 53 that is supported upon the chassis frame I2 by means of a sill 54 at the front end thereof, and a sill 55 at the rear end thereof. The sill 55 is supported upon the sill I5 of the truck chassis. I

. The stake type part II of the truck body has a metal front wall 56 and horizontal wood sill members 51 forming the side walls thereof.

The side walls of the part II are provided with the sockets 58 that may receive stakes 59 to increase the heighth of the cargo carrying section. These stakes 59 also have sockets 60 that may carry stakes 21 for supporting a tarpaulin over this part of the body.

The dump body 5|, or the rear part of the combination dump cargo body, is provided at its front end with a partition 3| that is hinged at its lower end by means of the hinge pin 33. The partition 3| is arranged to rotate in a counterclockwise direction, as viewed in Figure 4 whereby the partition can be lowered to rest in the recess 35.provided in the floor 53 of the stake section II of the truck body, thereby making the floor of both parts I0 and II substantially continuous. A chain 36 is connected to the partition 3| to support the same when the dump body part In is raised to dump material that may be carried in the body when the partition 3| has been lowered to the position heretofore mentioned. A suitable locking mechanism I9 is provided for locking the partition 3| in position as shown in Figure 4.

In Figures 2 and 3 there is illustrated means for aligning the front part II of the truck body with the rear part III, so as to prevent any side sway movement of the part III relative to the part II This means consists of a Z shaped plate 39 that is secured to the side wall of the front part II by means of bolts 38, one of these plates 39 being positioned on each side of the truck body 5 The dump body 5| has a guide bar 49 fixedly attached to each of the side walls thereof that engages the guide plate 39 when the rear dump section I0 is in position as shown in Figure 1 to thereby wedge the rear section l0 between the guide plates 39 carried upon the side walls of r the front section Dumping of the rear part ID of the truck body is effected by means Of the hydraulic motor 4|, shown in Figure 4. This motor has a plunger 42.

One end of the hydraulic motor is carried by the Since all the parts necessary for effecting tilting of the dump body 5| are not required for the stationary stake type part I some extra space- 32 is left under it which may be used for holding miscellaneous service parts, such as aspare tire 30.

Figures 5 and 6 demonstrate one example as to how the dump body of the invention may be used advantageously. In Figure 5 the dump body H is filled with heavy weight material 41, for instance gravel, and the stationary front compart-, ment with packages, crates or similar goods 49 not to be dumped. Figure 6 illustrates dumping of the material contained in compartment while the front part I 0 remains in horizontal position.-

Figure 7 shows that merely by lowering thepartiticn door 3| the truck body may be used over its entire length for carrying long lumber.

designated 49. This lumber can also be dumped by tilting the rear body of the truck. In this case the front end of the load is supported during tilting by the lowered partition door 3| held in position by the chain 36.

As material for the dump body, steel is preferred.- However, since the stationary front part II is not required to carry heavy loads it may also be made of wood instead of steel. Substitution of V wood for steel in th stationary compartment reduces the weight of the entire truck and also makes the building of the truck less expensive. Since only the rear part of the body Is lifted during dumping the truck of this invention and thus the center of gravity is not moved as highly a if the entire truck body Were lifted, the truck built according to the invention has a considerably greater stability during dumping than long wheel base trucks previously used having dump bodies thereon. Besides, the trucks described require less overhead clearance so that they can be used more often for work under bridges, in tunnels or other inside structure. Another advantage of the new dump body is that during shipping'the stake compartment could be detached and nested in the rear dump body. The rear part of the dumpbody also could be transferred onto a short wheelbase chassis if desired. 7

Instead of using the stationary front part for merchandise not to be dumped, seats can also be It can be readily seen,

arranged in it for the workmen. In this case the construction would entail the advantage that the truck could be dumped while the workmen remain on their seats.

It will be understood that while there have been described certain specific embodiments of my invention, it is not intended thereby to have this invention limited to or circumscribed by the specific details of materials, arrangement of parts and conditions set forth in the specification or illustrated in the drawings in view of the fact that this invention may be modified according to individual preference and conditions without dear-ting from the spirit of this disclosure and the scope of the appended claims.

Having thus fully described my invention what I claim as new and desire to secure by Letters Patent is:

1. A dump cargo body for trucks compri ing, a stationary stake type section forming the front part of the body and a tiltable dump section forming the rear part of the body, means to prevent transverse movement of one part of the body relative to the other, and a tiltable partition wall between said front part and said rear part movable into position to'form a part of the floor section of said front part to thereby permit use of both parts simultaneously as a single truck body unit.

2-. A. dump cargo body for trucks comprising, a stationary stake type front part, a tiltable dump body rear part, a partition between said front part and said rear part, means for hinging said partition upon the front end of said rear part when said rear part is tilted.

5. A dump cargo body for trucks comprising, a

stationary section forming the front part of the body and a tiltable dump ection forming the rear part of the body, means to prevent transverse movement of one part of the body relative to the other, and a tiltable partition wall between said front part and said rear part movable into position to form a part of the floor section of said front part to thereby permit use of both parts simultaneously as a single truck body unit.

6. A dump cargo body for trucks comprising, a stationary section forming the front part of the body and a tiltabl dump section forming the rear part of the body, and a tiltable partition wall between said front part and said rear part movable into position to form a part of the floor section of said front part to thereby permit use of both parts simultaneously as a single truck body unit.

7. A dump cargo body for trucks comprising, a stationary section forming the front part of the body and a tiltable dump section forming the rear part of the body, a tiltable partition wall between said front part and said rear part movable into position to form a part of the floor section of said front part to thereby permit use of both parts simultaneously as a single truck body unit, and means for holding said partition in said position FRED BISZANTZ! 

